MESON Chess Problem Database

Problem Display
PID: 145123 (3QR3/8/8/4n3/2PN2n1/3Pk3/2B2N2/1K4B1 w - - 0 1)

Tricotrin, ?

Leeds Mercury Weekly Supplement, 1882

(First published on Sat Sep 30 1882)

3QR3/8/8/4n3/2PN2n1/3Pk3/2B2N2/1K4B1

#2

9 + 3

14868 Pirnie Collection 2012
15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sd1+?
      • 1...Kd2
        • 2.Qa5#
      • 1...Kf4!
    • 1.Sh3+?
      • 1...Kd2
        • 2.Qa5#
      • 1...Sf2!
    • 1.Se4+?
      • 1...Kf4
        • 2.Qg5#
      • 1...Sf2!
    • 1.Sxg4+?
      • 1...Kd2
        • 2.Qa5#
      • 1...Kf4!
  • Keys
    • 1.Qh4!
      • 1...Kd2
        • 2.Se4#
      • 1...Kxd4
        • 2.Sd1#
      • 1...Kf4
        • 2.Sh3#
      • 1...Sxf2
        • 2.Qxf2#
      • 1...Sh2
        • 2.Se4#
      • 1...Sf6
        • 2.Se4#
      • 1...Sh6
        • 2.Se4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(a);N_SPINS(c),S_FLIGHT::QAB(H)
      • Refutation
        • K(a);N_SPINS(c),S_FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • K(a);N_SPINS(c),S_FLIGHT::QAB(H)
      • Refutation
        • S(b);N_SPINS(c),P_SPINS(b)
    • Try
      • S(D);CHECK,N_PINS(c)
      • Vars
        • K(a);S_FLIGHT::QAB1(H)
      • Refutation
        • S(b);P_SPINS(b)
    • Try
      • S(D);CHECK,XS(b)
      • Vars
        • K(a);N_SPINS(c),S_FLIGHT::QAB(H)
      • Refutation
        • K(a);N_SPINS(c),S_FLIGHT
  • Actual
    • Q(H);
    • Vars
      • K(a);N_SPINS(c),S_FLIGHT::S(D)
      • K(a);N_SPINS(c),P_SPINS(b),S_FLIGHT,XS(G)::B(B)+S(D)
      • K(a);N_SPINS(c),P_SPINS(b),S_FLIGHT::S(D)
      • S(b);N_SPINS(c),OGATE,P_SPINS(b),XS(D)::QAB1(H),XS(b)
      • S(b);N_GUARD::B(B)+S(D)
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